Basic Specifications

• Rated power: ~0.55 kW

• Rated speed: 2000 rpm @ 100 Hz

• Voltage: 400 VAC (3‑phase)

• Rated current: 3.7 A

• Frame: IEC 71L (shaft height 71 mm, long stack)

• Protection: IP54 (standard)

• Insulation class: F (155 °C)

• Encoder: TH = resolver (standard resolver)

• Shaft: Ø14 mm, with keyway

• Weight: ~14.06 kg

Construction & Features

• Design: Compact, high‑dynamic synchronous servo motor

• Rotor: Permanent‑magnet (rare‑earth)

• Cooling: TEFC (totally enclosed fan‑cooled)

• Feedback: Resolver (TH) – robust, shock/vibration‑resistant

• Duty: S1 (continuous)

Compatibility

• Drives: MDS, MCS, MAS, MKS series servo controllers

• Gearboxes: Direct mount to SEW PSF, PF, etc., servo gear units

Notes & Replacement

• DFY71L‑TH = 71L frame, resolver feedback, no brake.

• Obsolete: For new projects, use DY71L/TH or CM71L (modern permanent‑magnet servo motors).